165154555273 has 16 divisors (see below), whose sum is σ = 173602154880. Its totient is φ = 156918335616.

The previous prime is 165154555271. The next prime is 165154555303. The reversal of 165154555273 is 372555451561.

It is a cyclic number.

It is not a de Polignac number, because 165154555273 - 2¹ = 165154555271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165154555271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9344661 + ... + 9362317.

It is an arithmetic number, because the mean of its divisors is an integer number (10850134680).

Almost surely, 2^165154555273 is an apocalyptic number.

It is an amenable number.

165154555273 is a deficient number, since it is larger than the sum of its proper divisors (8447599607).

165154555273 is a wasteful number, since it uses less digits than its factorization.

165154555273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23616.

The product of its digits is 3150000, while the sum is 49.

The spelling of 165154555273 in words is "one hundred sixty-five billion, one hundred fifty-four million, five hundred fifty-five thousand, two hundred seventy-three".